Antifrosting device for windows



Dec. 11, 1928.

Original Filed March 21, 1925 m 9 T WN N O wwpdw A L w L 5 2% a w .1 m

Patented Dec. 11, 1928.

UNITED STATES PATENT OFFICE.

CARL H. WEI, F MINNEAPOLIS, MINNESOTA, ASSIGNOR TO 0. H. WILL MOTORS COR- PORATION, OF MINNEAPOLIS, MINNESOTA, A CORPORATION OF MINNESOTA.

I I ANTIFROSTING DEVICE FOR WINDOWS.

Original application filed March 21, 1925, Serial No. 17,285. Divided and this application filed June 4,

1928. Serial No. 282,679.

This invention relates to an improved antifrostingdevice adapted for use on windows to prevent the accumulation of frost thereon and more particularly relates to such a device adapted tobe demountably mounted upon the windshield of a power propelled vehicle,

such as an automobile, bus or truck, and which functions to cooperate with the windshield to prevent frost from accumulating on the latter in cold weather, with the resultant obscuring of the drivers vision. This application is divisional of my copending application for anti-frosting devices for windows, filed March 21, 1925, Serial Number 17,285.

An object of theinvention is to provide such a device having means thereon whereby it may readily and quickly be mounted upon the flat surface of a window panel'or a windshield without the use of screws or bolts, and also without the necessity of having to mar the frame of the windshield or window.

A further and more specific object of the invention is to provide an anti-frosting device comprising a glass pane mounted in a frame of flexible material having a troughlike member on one side-thereof which, when pressed against the surface of a windshield,

will be securely held thereon by suction caused by a vacuum being created within the troughlike member when pressed against the windshield. A further object is to provide an antifrosting device consisting of a panel of transparent material having means for securing it to a surface of a windshield or window in spaced relation thereto so that a dead air space will be provided between it and the windshield, thereby preventing frost from accumulating upon that portion of the windshield covered by the device.

The particular object of the invention. therefore, is to provide an anti-frosting device for windows which may readily and conveniently be mounted upon a flat surface and will be held thereon by suction when firmly pressed against such surface.

derstood that the invention is not confined to the exact features shown as various changes may be made within the scope of the claims which follow.

In the drawings:

Figure 1 is an elevational view of a portion of a windshield showing-the improved anti-frosting device mounted thereon;

Figure 2 is a sectional view on the line 22 of Figure 1 showing the means provided for securing it to the windshield;

Figure 3 is a viewof the device removed from the windshield and showing the troughlike member provided on one side thereof for securing itto the window or windshield; and

Figures 4 and 5 are views showing a modified construction.

In the selected embodiment of the invention here shown, the anti-frosting device is shown mounted upon an ordinary windshield such as are commonly used in the construction of automobiles, buses and trucks. This windshield comprises a frame 6 having the usual pane of glass 7 mounted therein.

'The novel anti-frosting device herein shown preferably comprises a glass panel 8 mounted in a suitable frame 9 which preferably is constructed of a flexible material such as rubber. This frame-is substantially U- shaped in cross-section and is adapted to be fitted over the edges of the panel 8 as shown in Figure 2. The frame 9 is therefore'preferably of a flexible material which will have sufficient elasticity to permit it to be stretched sufliciently to receive the glass as shown in Figures 1 and 3.

The means provided for securing the device to the surface of the windshield preferably consists inproviding a trough-like groove 11 on one side of the frame 9 which groove may be readily formed by means of the arcuate flanges 12 and 13 preferably integrally formed on the inner side of frame. In mounting the device upon the windshield, the surface of the latter is pref erably first moistened with a damp cloth or other means after which the flan es 12 and 13 will be placed against the surace of the windshield and pressure applied thereto by -bearing against the frame 9. By thus ressing the device against the windshield, t e air will be forced out of the trough-like groove 11 sothat when the pressure is released from the frame a vacuum will be built up in the so i the

direct contact with that portion of the windshield encircled by the flexible flange 13, thereby positively preventing frost from accumulating upon the encircled portion of the windshield. By this novel means of securing the device to the windshield, it will readily be seen that such device may be mounted upon any portion or surface of the windshield either inside or outside of the vehicle without the use of bolts or screws, or in any way marring the surface or frame of the windshield. If desired, it may also be mounted upon other types of windows in a similar manner. a

In Figures 4 and 5, there is shown a modified form wherein the means provided for securing the device to the windshield are constructed independently of the frame'encircling the glass panel 15. In the construction here shown, the glass panel 15 preferably has a plurality of suction cups 16 secured thereto by means of screws 17 and nuts 18. These suction cups 16 are preferably located adjacent the corners of the panel 15 as shown in Figure 5. The panel 15 is mounted in a frame 19 which also is of flexible material so that it may be stretched sufiiciently to receive the panel as shown in Figure 4. The inner side of the frame 19 preferably has a hollow tubelike member 21 formed thereon which is adapted to be pressed into contact with the 1 surface of the windshield to tightly seal the joint between the frame 19 and the windshield when the device is mounted thereon, as shown in Figure 4. In the construction shown in Figures 4 and 5, the suction cups 16 merely function to secure the device to the windshield while the dead air space 22 provided between the panel 15 and the windshield is formedby the tube-like member 21 being firmly pressed against thesurface of the windshield thereby preventing leakage of air therebetween.

From the foregoing therefore, it will'readily be seen and understood that this novel anti-frosting device may be conveniently mounted upon any flat surface for the purpose of preventing frost from accumulating upon such surface. The suction in the annular groove 11 and also in the suction cups 16 will also be sufiicient to retain the device in such position for an indefinite length of time without danger of it accidentally becoming detached therefrom. In the drawings and also in the description,- the panels'8 and 15 have been referred to as being of glass but it is to be understood that they may be made of any suitable transparent material which may be used for the purpose specified.

I claim as my invention 1. An attachment for Windshields comprising a transparent plate, removable suction cups attached thereto for connecting the plate with the windshield, a strip ofresilient material extending around the edge of the plate and having a groove for receiving the .edges of the plate and said strip extending at right angles to the body of the plate and formed with an opening extending longitudinally through the strip adjacent its outer edge so that this edge which engages the windshield will flex to provide a tight joint between the strip and windshield.

2. An attachment for the windshield of automobiles or like transparent plates, including a transparent element, a continuous U-shaped member receiving the edges and ends of said element therein and being integrally formed on the inner corners of said U-sha ed member with a continuous compressi le bead to contact with the windshield or plate, in combination with means at the corners of the transparent element for holding the latteron the windshield, or plate and the bead compressed thereagainst.

3. An attachment for Windshields, comprising a substantially rectangular frame carrying a transparent plate having suction cups fixedly secured on one face at the corners thereof, a resilient substantially rectangular member having an inner continuous groove, which member is stretched over and whose groove receives therein the frame,-and said member, upon its inner face and at its outer corners bein integrally formed with a continuous bea which is hollow and which is round in cross section.

In witness whereof, I have hereunto set my hand this 29th day of May, 1928.

CARLH. WILL. 

